Implement rvv version mem* and str* for riscv64
Add vector version mem* and str* functions and only build them when the
vector extension is enabled.
The original implementation comes from
https://github.com/sifive/sifive-libc, which we agree to contribute to
the Android Open Source Project.
Test: mma
Change-Id: I11b671a5bc571d7c783a657f272f282df7d16c29
Signed-off-by: Yun Hsiang <yun.hsiang@sifive.com>
diff --git a/libc/arch-riscv64/static_function_dispatch.S b/libc/arch-riscv64/static_function_dispatch.S
new file mode 100644
index 0000000..3bf0275
--- /dev/null
+++ b/libc/arch-riscv64/static_function_dispatch.S
@@ -0,0 +1,55 @@
+/*
+ * Copyright (C) 2023 The Android Open Source Project
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * * Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in
+ * the documentation and/or other materials provided with the
+ * distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+ * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include <private/bionic_asm.h>
+
+#define FUNCTION_DELEGATE(name, impl) \
+ENTRY(name); \
+ j impl; \
+END(name)
+
+#if defined(__riscv_v)
+
+FUNCTION_DELEGATE(memchr, memchr_vext)
+FUNCTION_DELEGATE(memcmp, memcmp_vext)
+FUNCTION_DELEGATE(memcpy, memcpy_vext)
+FUNCTION_DELEGATE(memmove, memmove_vext)
+FUNCTION_DELEGATE(memset, memset_vext)
+FUNCTION_DELEGATE(strcat, strcat_vext)
+FUNCTION_DELEGATE(strchr, strchr_vext)
+FUNCTION_DELEGATE(strcmp, strcmp_vext)
+FUNCTION_DELEGATE(strcpy, strcpy_vext)
+FUNCTION_DELEGATE(strlen, strlen_vext)
+FUNCTION_DELEGATE(strncat, strncat_vext)
+FUNCTION_DELEGATE(strncmp, strncmp_vext)
+FUNCTION_DELEGATE(strncpy, strncpy_vext)
+FUNCTION_DELEGATE(strnlen, strnlen_vext)
+
+#endif
+
+NOTE_GNU_PROPERTY()